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Qi, Xiaolong; Berzigotti, Annalisa; Cardenas, Andres; Sarin, Shiv Kumar (2018). Emerging non-invasive approaches for diagnosis and monitoring of portal hypertension. The lancet. Gastroenterology & hepatology, 3(10), pp. 708-719. Elsevier 10.1016/S2468-1253(18)30232-2
